On Fri, Sep 15, 2017 at 10:26 AM, Jerome Brunet <jbru...@baylibre.com> wrote:
> I initially planned to do some refcounting in the gpio layer but that would > make > no sense, as you pointed out, the irq could be shared. This refcounting would > only make sense at the irq level. > > On a more general note, I wonder when is it safe for a driver to dispose of > the > mapping of a possibly shared irq ? There is no way to know if the mapping is > still used somewhere else, or am I missing something again ? I have no idea, but maybe Marc Z or Rob H knows this? They usually have a bit of deeper IRQ-centric knowledge. Yours, Linus Walleij
